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Double Dose Muay Thai and Fitness

4.7 ★★★★★ 64 Google reviews · Kickboxing gym in Fontana, California

Kickboxing gym Free trial Beginners welcome Kids & teens Cardio kickboxing Women's classes Competition team

Kickboxing and self-defense classes in a Muay Thai-focused facility.

Plan your first class

  • Free trial or intro class most gyms welcome new members with a free trial or intro class — check their site or give them a call to book your first session
  • Beginner-friendly all fitness levels welcome, including total beginners — no experience needed, and you get in shape by training, not before
  • Cardio kickboxing classes high-energy cardio kickboxing on the bags and pads — a fun, sweaty workout built for fitness and weight loss, at your own pace
  • Kids & teen classes kids and teen kickboxing classes — built around confidence, focus, and fun
  • Women's classes dedicated women's kickboxing classes — a welcoming space to start out and train
  • Sparring sparring and partner work for members who want it — always optional, eased in gradually, with the coach controlling the contact
  • Competition team a competition team for members who want to test themselves in the ring — amateur kickboxing, muay thai, or K-1
  • Today see hours ·
  • Website & schedule gokickit.com — book classes and see the live schedule
  • Phone +1 909-574-8424

Hours

Monday 4–9 pm
Tuesday 9–11:30 am, 4–9 pm
Wednesday 4–9 pm
Thursday 9–11:30 am, 4–9 pm
Friday 6–8 pm
Saturday 9–11 am
Sunday Closed

Hours shift for holidays and class-schedule changes — worth a quick check before a special trip.

The classes they run

Kickboxing classes on the schedule at Double Dose Muay Thai and Fitness, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids Kickboxing 2 mentions

“My daughter has been going to Double Dose Muay Thai for about 4–5 months now, and she absolutely loves it here!”

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💪 Women's Kickboxing 2 mentions

“In addition to Muay Thai classes in Fontana, Double Dose also offers a Womens Bootcamp program.”

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🌱 Beginners 5 mentions

“There is a great beginners program so that you learn the important foundations to getting great technique before moving into the intermediate and advanced programs.”

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🏆 Competition Team

“Great place for beginners and the competition team.”

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🦵 Muay Thai 36 mentions

“Muay Thai has changed my life dramatically and if it wasn't for Arjarn Bryan and the awesome instructors at Double Dose Muay Thai, I don't know where I would be.”

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🥊 Boxing

“Progressing through each class is challenging, but very rewarding as you build your skills in boxing, self-defense and overall fitness.”

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Teens Kickboxing

“I'm glad I started training there after High School, because it helped me grow up, but I wish I would've started sooner!”

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Kickboxing Bootcamp 3 mentions

“In addition to Muay Thai classes in Fontana, Double Dose also offers a Womens Bootcamp program.”

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Other martial arts here

Kickboxing gyms are usually multi-discipline. Here's what else members mention training under the same roof at Double Dose Muay Thai and Fitness — mined from their reviews and the gym's own info.

🦵 Muay Thai 33 mentions

“Muay Thai has changed my life dramatically and if it wasn't for Arjarn Bryan and the awesome instructors at Double Dose Muay Thai, I don't know where I would be.”

Other gyms that also teach muay thai →

🥊 Boxing

“Progressing through each class is challenging, but very rewarding as you build your skills in boxing, self-defense and overall fitness.”

Other gyms that also teach boxing →

🛡️ Self-Defense 3 mentions

“Progressing through each class is challenging, but very rewarding as you build your skills in boxing, self-defense and overall fitness.”

Other gyms that also teach self-defense →

Disciplines are mined from reviews and the gym's own info — they show what members have trained, not a formal class guarantee. If you specifically want muay thai, boxing, or MMA alongside your kickboxing, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 64 Google reviews — in their own words.

🧑‍🏫 expert, motivating coaching 2 mentions

“I am proud to be part of such a great gym with world class instructors who care about their students.”

🌱 welcoming to beginners 4 mentions

“There is a great beginners program so that you learn the important foundations to getting great technique before moving into the intermediate and advanced programs.”

🏆 active competition / fight team 2 mentions

“Great for children, bully prevention, fitness, competition, fun and for all skills levels.”

🧼 clean, well-equipped gym 7 mentions

“The staff will always make sure to teach you clean and crisp techniques which makes it easier to learn later on.”

💗 welcoming to women 3 mentions

“In addition to Muay Thai classes in Fontana, Double Dose also offers a Womens Bootcamp program.”

🧠 builds confidence & relieves stress 4 mentions

“Muay Thai has changed my life dramatically and if it wasn't for Arjarn Bryan and the awesome instructors at Double Dose Muay Thai, I don't know where I would be.”

From the reviews

I've been taking classes at Double Dose since September and I absolutely love it. Their staff is incredible and they always do their best to help build you up in any way they can. They make sure the curriculum is easy to follow and is always fun.

★★★★★ — Cass, Jan 2018

When I was looking for a good martial art to learn and started asking around, one of my work colleagues told me about Double Dose Muay Thai. He said it was a great place and that I should check it out. It was the best recommendation I ever received.

★★★★★ — Jenny, Oct 2012

Double Dose Muay Thai has changed my life! A respectful, disciplined and extremely knowledgable Muay Thai school. The instructors have generations of experience. This is the closest you will get to traditional Thai culture in Southern California. You will learn much more then martial arts here.

★★★★★ — Benji, Sep 2012

I joined Double Dose a little over 2 years ago and it was the perfect place to start my martial arts journey. They offer 3 classes that cater to all skill levels (Kickboxing, Foundations, Combat Athlete).

★★★★★ — Chase, Nov 2024

Excerpts from public Google reviews. Read all 64 reviews →

New to kickboxing? Start at Double Dose Muay Thai and Fitness

Double Dose Muay Thai and Fitness comes up as a beginner-friendly gym, going by their listing and members’ reviews. If you've never thrown a punch or a kick, that's exactly who a good beginners class is for. A few things worth knowing before your first week. First, you don't need to be fit or coordinated to start — you get in shape by training, not before it, and coaches scale every drill to you. Second, you won't be thrown into hard sparring — reputable gyms build the basics (stance, footwork, and punches and kicks on pads and bags) first, and any contact eases in gradually under a coach's control. Third, all fitness levels really are welcome — ask about a dedicated beginners or fundamentals class time so your first session is alongside others who are also starting out. Most gyms are happy to let you watch or try a class first, so reach out before you commit.

Check beginner classes on their site

Your first kickboxing class at Double Dose Muay Thai and Fitness

Nervous about walking into a kickboxing gym for the first time? Almost everyone is, and good coaches expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling the basics — stance, footwork, and punches and kicks on pads or a heavy bag — not hard sparring. Go at your own pace and rest whenever you need to; no one will bat an eye. What to wear: comfortable athletic clothes you can move and sweat in, and supportive trainers. What to bring: water, and hand wraps and gloves if you have them — many gyms lend loaner gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves and wraps (and shin guards once you start sparring). Sparring is optional and eases in gradually, once your basics are solid. Arrive 10–15 minutes early to sign a waiver and meet the coach. It gets easier fast — most people feel far more at home by their third class.

Kickboxing is a contact sport. Warm up, pace yourself, listen to your coaches, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find Double Dose Muay Thai and Fitness

14189 Foothill Blvd Ste 105, Fontana, CA92335

Get directions

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Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this gym? Claim your listing — it's free.